./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9671c34313c5e47de5bd2f842db47c3009aa180bae8c949f2010db1179ac602f ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:15:24,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:15:24,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:15:24,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:15:24,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:15:24,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:15:24,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:15:24,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:15:24,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:15:24,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:15:24,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:15:24,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:15:24,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:15:24,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:15:24,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:15:24,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:15:24,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:15:24,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:15:24,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:15:24,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:15:24,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:15:24,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:15:24,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:15:24,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:15:24,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:15:24,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:15:24,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:15:24,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:15:24,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:15:24,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:15:24,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:15:24,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:15:24,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:15:24,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:15:24,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:15:24,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:15:24,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:15:24,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:15:24,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:15:24,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:15:24,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:15:24,617 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:15:24,665 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:15:24,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:15:24,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:15:24,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:15:24,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:15:24,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:15:24,669 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:15:24,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:15:24,670 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:15:24,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:15:24,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:15:24,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:15:24,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:15:24,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:15:24,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:15:24,672 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:15:24,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:15:24,672 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:15:24,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:15:24,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:15:24,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:15:24,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:15:24,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:15:24,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:15:24,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:15:24,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:15:24,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:15:24,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:15:24,675 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:15:24,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:15:24,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:15:24,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:15:24,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9671c34313c5e47de5bd2f842db47c3009aa180bae8c949f2010db1179ac602f [2021-10-21 20:15:24,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:15:25,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:15:25,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:15:25,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:15:25,010 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:15:25,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2021-10-21 20:15:25,085 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/data/050af1257/803389cee7d3452782283e09b0387035/FLAG0ea18cf12 [2021-10-21 20:15:25,588 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:15:25,589 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2021-10-21 20:15:25,600 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/data/050af1257/803389cee7d3452782283e09b0387035/FLAG0ea18cf12 [2021-10-21 20:15:25,929 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/data/050af1257/803389cee7d3452782283e09b0387035 [2021-10-21 20:15:25,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:15:25,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:15:25,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:15:25,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:15:25,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:15:25,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:15:25" (1/1) ... [2021-10-21 20:15:25,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@266be1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:25, skipping insertion in model container [2021-10-21 20:15:25,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:15:25" (1/1) ... [2021-10-21 20:15:25,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:15:25,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:15:26,150 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2021-10-21 20:15:26,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:15:26,176 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:15:26,187 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2021-10-21 20:15:26,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:15:26,205 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:15:26,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:26 WrapperNode [2021-10-21 20:15:26,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:15:26,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:15:26,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:15:26,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:15:26,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:26" (1/1) ... [2021-10-21 20:15:26,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:26" (1/1) ... [2021-10-21 20:15:26,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:15:26,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:15:26,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:15:26,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:15:26,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:26" (1/1) ... [2021-10-21 20:15:26,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:26" (1/1) ... [2021-10-21 20:15:26,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:26" (1/1) ... [2021-10-21 20:15:26,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:26" (1/1) ... [2021-10-21 20:15:26,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:26" (1/1) ... [2021-10-21 20:15:26,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:26" (1/1) ... [2021-10-21 20:15:26,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:26" (1/1) ... [2021-10-21 20:15:26,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:15:26,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:15:26,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:15:26,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:15:26,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:26" (1/1) ... [2021-10-21 20:15:26,272 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:15:26,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:26,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:15:26,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:15:26,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:15:26,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:15:26,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:15:26,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:15:26,814 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:15:26,815 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-21 20:15:26,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:26 BoogieIcfgContainer [2021-10-21 20:15:26,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:15:26,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:15:26,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:15:26,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:15:26,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:15:25" (1/3) ... [2021-10-21 20:15:26,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdcad62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:15:26, skipping insertion in model container [2021-10-21 20:15:26,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:26" (2/3) ... [2021-10-21 20:15:26,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdcad62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:15:26, skipping insertion in model container [2021-10-21 20:15:26,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:26" (3/3) ... [2021-10-21 20:15:26,825 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound5.c [2021-10-21 20:15:26,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:15:26,831 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-21 20:15:26,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:15:26,924 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:15:26,924 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-21 20:15:26,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 20:15:26,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:26,945 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:26,945 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:26,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:26,950 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-10-21 20:15:26,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:26,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260218447] [2021-10-21 20:15:26,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:26,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:27,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:27,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260218447] [2021-10-21 20:15:27,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260218447] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:27,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:27,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:15:27,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518452475] [2021-10-21 20:15:27,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:15:27,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:27,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:15:27,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:15:27,159 INFO L87 Difference]: Start difference. First operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:27,177 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2021-10-21 20:15:27,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:15:27,179 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-21 20:15:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:27,187 INFO L225 Difference]: With dead ends: 43 [2021-10-21 20:15:27,187 INFO L226 Difference]: Without dead ends: 19 [2021-10-21 20:15:27,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:15:27,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-21 20:15:27,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-21 20:15:27,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-21 20:15:27,224 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2021-10-21 20:15:27,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:27,226 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-21 20:15:27,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,227 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-21 20:15:27,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 20:15:27,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:27,229 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:27,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:15:27,230 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:27,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:27,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-10-21 20:15:27,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:27,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836515771] [2021-10-21 20:15:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:27,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:27,279 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:15:27,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377328846] [2021-10-21 20:15:27,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:27,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:27,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:27,301 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:27,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:15:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:27,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:15:27,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:27,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:27,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836515771] [2021-10-21 20:15:27,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:15:27,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377328846] [2021-10-21 20:15:27,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377328846] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:27,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:27,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:15:27,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140557446] [2021-10-21 20:15:27,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:15:27,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:27,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:15:27,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:15:27,557 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:27,625 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-10-21 20:15:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:15:27,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-21 20:15:27,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:27,627 INFO L225 Difference]: With dead ends: 33 [2021-10-21 20:15:27,627 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 20:15:27,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:27,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 20:15:27,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-21 20:15:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-21 20:15:27,638 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 9 [2021-10-21 20:15:27,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:27,638 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-21 20:15:27,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,639 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-21 20:15:27,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:15:27,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:27,641 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:27,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:27,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:27,855 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:27,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:27,855 INFO L82 PathProgramCache]: Analyzing trace with hash 636965506, now seen corresponding path program 1 times [2021-10-21 20:15:27,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:27,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977807983] [2021-10-21 20:15:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:27,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:27,878 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:15:27,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560053655] [2021-10-21 20:15:27,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:27,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:27,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:27,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:27,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:15:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:27,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:15:27,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:28,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:28,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977807983] [2021-10-21 20:15:28,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:15:28,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560053655] [2021-10-21 20:15:28,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560053655] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:28,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:15:28,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-21 20:15:28,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695306388] [2021-10-21 20:15:28,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:15:28,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:28,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:15:28,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:28,166 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:28,264 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-10-21 20:15:28,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:15:28,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-21 20:15:28,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:28,266 INFO L225 Difference]: With dead ends: 36 [2021-10-21 20:15:28,267 INFO L226 Difference]: Without dead ends: 32 [2021-10-21 20:15:28,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:15:28,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-21 20:15:28,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2021-10-21 20:15:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-21 20:15:28,272 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 12 [2021-10-21 20:15:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:28,273 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-21 20:15:28,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-21 20:15:28,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:15:28,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:28,274 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:28,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:28,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:28,495 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:28,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:28,495 INFO L82 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 2 times [2021-10-21 20:15:28,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:28,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864039672] [2021-10-21 20:15:28,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:28,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:28,510 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:15:28,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216863759] [2021-10-21 20:15:28,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:15:28,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:28,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:28,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:28,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:15:28,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:15:28,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:15:28,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:15:28,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:28,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:28,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:28,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864039672] [2021-10-21 20:15:28,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:15:28,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216863759] [2021-10-21 20:15:28,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216863759] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:28,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:15:28,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 20:15:28,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673522102] [2021-10-21 20:15:28,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:15:28,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:28,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:15:28,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:15:28,819 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:28,935 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-10-21 20:15:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:15:28,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-21 20:15:28,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:28,937 INFO L225 Difference]: With dead ends: 45 [2021-10-21 20:15:28,937 INFO L226 Difference]: Without dead ends: 41 [2021-10-21 20:15:28,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:15:28,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-21 20:15:28,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2021-10-21 20:15:28,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-10-21 20:15:28,943 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 15 [2021-10-21 20:15:28,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:28,944 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-10-21 20:15:28,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,944 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-10-21 20:15:28,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:15:28,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:28,945 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:28,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:29,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:29,149 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:29,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:29,150 INFO L82 PathProgramCache]: Analyzing trace with hash -531865812, now seen corresponding path program 1 times [2021-10-21 20:15:29,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:29,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604353405] [2021-10-21 20:15:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:29,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:29,167 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:15:29,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429382026] [2021-10-21 20:15:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:29,170 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:29,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:29,171 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:29,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:15:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:29,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 20:15:29,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:29,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:29,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604353405] [2021-10-21 20:15:29,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:15:29,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429382026] [2021-10-21 20:15:29,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429382026] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:29,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:15:29,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 20:15:29,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536053] [2021-10-21 20:15:29,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:15:29,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:29,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:15:29,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:15:29,461 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:29,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:29,534 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-10-21 20:15:29,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:15:29,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-21 20:15:29,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:29,536 INFO L225 Difference]: With dead ends: 36 [2021-10-21 20:15:29,536 INFO L226 Difference]: Without dead ends: 30 [2021-10-21 20:15:29,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:15:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-21 20:15:29,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-21 20:15:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:29,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-10-21 20:15:29,542 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 17 [2021-10-21 20:15:29,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:29,543 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-21 20:15:29,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:29,543 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-10-21 20:15:29,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 20:15:29,544 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:29,544 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:29,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:29,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:29,759 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:29,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:29,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1905056066, now seen corresponding path program 3 times [2021-10-21 20:15:29,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:29,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136991495] [2021-10-21 20:15:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:29,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:29,771 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:15:29,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541353981] [2021-10-21 20:15:29,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:15:29,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:29,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:29,773 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:29,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 20:15:31,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 20:15:31,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:15:31,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 20:15:31,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-21 20:15:31,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:31,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136991495] [2021-10-21 20:15:31,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:15:31,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541353981] [2021-10-21 20:15:31,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541353981] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:31,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:15:31,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-21 20:15:31,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672375429] [2021-10-21 20:15:31,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:15:31,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:31,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:15:31,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:31,281 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:31,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:31,530 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-10-21 20:15:31,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:15:31,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-21 20:15:31,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:31,531 INFO L225 Difference]: With dead ends: 30 [2021-10-21 20:15:31,531 INFO L226 Difference]: Without dead ends: 26 [2021-10-21 20:15:31,532 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:15:31,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-21 20:15:31,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-10-21 20:15:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:31,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-10-21 20:15:31,536 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2021-10-21 20:15:31,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:31,537 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-10-21 20:15:31,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:31,537 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-10-21 20:15:31,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:15:31,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:31,538 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:31,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-21 20:15:31,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:31,739 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:31,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:31,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1063840794, now seen corresponding path program 2 times [2021-10-21 20:15:31,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:31,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220759441] [2021-10-21 20:15:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:31,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:31,747 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:15:31,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639837960] [2021-10-21 20:15:31,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:15:31,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:31,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:31,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:31,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 20:15:31,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:15:31,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:15:31,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:15:31,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:32,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:32,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220759441] [2021-10-21 20:15:32,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:15:32,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639837960] [2021-10-21 20:15:32,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639837960] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:32,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:15:32,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 20:15:32,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073516691] [2021-10-21 20:15:32,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:15:32,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:32,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:15:32,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:15:32,202 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:32,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:32,312 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-10-21 20:15:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:15:32,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-21 20:15:32,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:32,313 INFO L225 Difference]: With dead ends: 30 [2021-10-21 20:15:32,314 INFO L226 Difference]: Without dead ends: 24 [2021-10-21 20:15:32,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.1ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:15:32,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-21 20:15:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-21 20:15:32,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-10-21 20:15:32,322 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2021-10-21 20:15:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:32,322 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-10-21 20:15:32,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-10-21 20:15:32,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 20:15:32,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:32,323 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:32,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:32,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:32,524 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:32,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:32,524 INFO L82 PathProgramCache]: Analyzing trace with hash 2061308012, now seen corresponding path program 3 times [2021-10-21 20:15:32,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:32,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579975986] [2021-10-21 20:15:32,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:32,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:32,537 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:15:32,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563540886] [2021-10-21 20:15:32,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:15:32,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:32,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:32,538 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:32,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 20:15:32,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-21 20:15:32,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:15:32,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 20:15:32,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:33,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:33,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579975986] [2021-10-21 20:15:33,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:15:33,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563540886] [2021-10-21 20:15:33,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563540886] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:33,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:15:33,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 20:15:33,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496862803] [2021-10-21 20:15:33,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:15:33,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:33,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:15:33,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:15:33,217 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:33,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:33,342 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-10-21 20:15:33,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:15:33,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-21 20:15:33,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:33,344 INFO L225 Difference]: With dead ends: 33 [2021-10-21 20:15:33,344 INFO L226 Difference]: Without dead ends: 27 [2021-10-21 20:15:33,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-21 20:15:33,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-21 20:15:33,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-21 20:15:33,359 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 23 [2021-10-21 20:15:33,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:33,359 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-21 20:15:33,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:33,360 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-21 20:15:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 20:15:33,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:33,361 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:33,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:33,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-21 20:15:33,567 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:33,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:33,569 INFO L82 PathProgramCache]: Analyzing trace with hash 728478426, now seen corresponding path program 4 times [2021-10-21 20:15:33,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:33,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612991782] [2021-10-21 20:15:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:33,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:33,586 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:15:33,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525282006] [2021-10-21 20:15:33,589 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 20:15:33,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:33,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:33,591 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:33,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 20:15:33,698 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 20:15:33,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:15:33,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-21 20:15:33,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:34,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:34,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612991782] [2021-10-21 20:15:34,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:15:34,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525282006] [2021-10-21 20:15:34,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525282006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:34,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:15:34,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 20:15:34,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919240856] [2021-10-21 20:15:34,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:15:34,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:34,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:15:34,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:15:34,020 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:34,165 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-10-21 20:15:34,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:15:34,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-21 20:15:34,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:34,167 INFO L225 Difference]: With dead ends: 36 [2021-10-21 20:15:34,167 INFO L226 Difference]: Without dead ends: 30 [2021-10-21 20:15:34,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 87.8ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:15:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-21 20:15:34,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-21 20:15:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:34,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-10-21 20:15:34,176 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 26 [2021-10-21 20:15:34,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:34,176 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-10-21 20:15:34,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:34,177 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-10-21 20:15:34,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 20:15:34,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:34,178 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:34,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:34,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:34,397 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:34,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:34,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1374933420, now seen corresponding path program 5 times [2021-10-21 20:15:34,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:34,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180268846] [2021-10-21 20:15:34,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:34,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:34,412 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:15:34,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190234756] [2021-10-21 20:15:34,417 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 20:15:34,418 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:34,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:34,419 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:34,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 20:15:34,779 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-21 20:15:34,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:15:34,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 20:15:34,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:35,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:35,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180268846] [2021-10-21 20:15:35,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:15:35,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190234756] [2021-10-21 20:15:35,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190234756] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:35,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:15:35,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 20:15:35,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804979687] [2021-10-21 20:15:35,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:35,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:35,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:35,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:35,100 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:35,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:35,258 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-10-21 20:15:35,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:15:35,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-21 20:15:35,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:35,260 INFO L225 Difference]: With dead ends: 39 [2021-10-21 20:15:35,260 INFO L226 Difference]: Without dead ends: 33 [2021-10-21 20:15:35,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:15:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-21 20:15:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-21 20:15:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-10-21 20:15:35,285 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 29 [2021-10-21 20:15:35,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:35,285 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-10-21 20:15:35,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-10-21 20:15:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 20:15:35,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:35,287 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:35,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:35,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 20:15:35,492 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:35,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:35,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1282304410, now seen corresponding path program 6 times [2021-10-21 20:15:35,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:35,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492654685] [2021-10-21 20:15:35,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:35,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:35,518 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:15:35,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285836910] [2021-10-21 20:15:35,518 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 20:15:35,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:35,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:35,519 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:35,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 20:15:37,171 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-21 20:15:37,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:15:37,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 20:15:37,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:37,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:37,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492654685] [2021-10-21 20:15:37,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:15:37,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285836910] [2021-10-21 20:15:37,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285836910] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:37,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:37,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:37,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617166720] [2021-10-21 20:15:37,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:37,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:37,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:37,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:37,488 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:37,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:37,666 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-10-21 20:15:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:15:37,667 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-21 20:15:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:37,667 INFO L225 Difference]: With dead ends: 33 [2021-10-21 20:15:37,667 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:15:37,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 212.1ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-10-21 20:15:37,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:15:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:15:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:15:37,668 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-10-21 20:15:37,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:37,668 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:15:37,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:37,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:15:37,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:15:37,671 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:15:37,671 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:15:37,672 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:15:37,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:37,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:37,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:15:37,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:37,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:37,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:37,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:37,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:38,487 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-21 20:15:38,487 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-10-21 20:15:38,488 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-10-21 20:15:38,488 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2021-10-21 20:15:38,488 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-21 20:15:38,488 INFO L857 garLoopResultBuilder]: For program point L7-2(line 7) no Hoare annotation was computed. [2021-10-21 20:15:38,488 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:15:38,488 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:15:38,488 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:15:38,488 INFO L853 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (let ((.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= (+ (* 6 .cse3) (* 5 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 12 ULTIMATE.start_main_~x~0)))) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= ULTIMATE.start_main_~k~0 5))) (or (and .cse0 (< 0 ULTIMATE.start_main_~k~0) .cse1 (= ULTIMATE.start_main_~y~0 1) .cse2 (= ULTIMATE.start_main_~c~0 1) (= ULTIMATE.start_main_~x~0 .cse3)) (and .cse4 .cse0 (= ULTIMATE.start_main_~y~0 3) .cse1 .cse2 (= ULTIMATE.start_main_~c~0 3) (< 2 ULTIMATE.start_main_~k~0)) (and .cse4 .cse0 (< 4 ULTIMATE.start_main_~k~0) (<= 5 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 5) (<= ULTIMATE.start_main_~c~0 5) .cse1 .cse2) (and (= ULTIMATE.start_main_~c~0 2) .cse4 .cse0 (< 1 ULTIMATE.start_main_~k~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 2)) (and .cse4 .cse0 (< 3 ULTIMATE.start_main_~k~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 4) (= ULTIMATE.start_main_~c~0 4)) (and (= ULTIMATE.start_main_~y~0 0) (<= 0 ULTIMATE.start_main_~k~0) .cse4 .cse0 .cse2 (= ULTIMATE.start_main_~c~0 0))))) [2021-10-21 20:15:38,489 INFO L857 garLoopResultBuilder]: For program point L28-3(lines 28 37) no Hoare annotation was computed. [2021-10-21 20:15:38,489 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-21 20:15:38,489 INFO L860 garLoopResultBuilder]: At program point L41(lines 17 42) the Hoare annotation is: true [2021-10-21 20:15:38,489 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:15:38,489 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-21 20:15:38,489 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-10-21 20:15:38,490 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 31 32) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (let ((.cse4 (= (+ (* 6 .cse3) (* 5 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 12 ULTIMATE.start_main_~x~0)))) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~k~0 5))) (or (and .cse0 (< 0 ULTIMATE.start_main_~k~0) .cse1 (= ULTIMATE.start_main_~y~0 1) .cse2 (= ULTIMATE.start_main_~c~0 1) (= ULTIMATE.start_main_~x~0 .cse3)) (and .cse4 .cse0 (= ULTIMATE.start_main_~y~0 3) .cse1 .cse2 (= ULTIMATE.start_main_~c~0 3) (< 2 ULTIMATE.start_main_~k~0)) (and .cse4 .cse0 (< 4 ULTIMATE.start_main_~k~0) (<= 5 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 5) (<= ULTIMATE.start_main_~c~0 5) .cse1 .cse2) (and (= ULTIMATE.start_main_~c~0 2) .cse4 .cse0 (< 1 ULTIMATE.start_main_~k~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 2)) (and (= ULTIMATE.start_main_~y~0 0) (<= 0 ULTIMATE.start_main_~k~0) .cse4 .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~c~0 0)) (and .cse4 .cse0 (< 3 ULTIMATE.start_main_~k~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 4) (= ULTIMATE.start_main_~c~0 4))))) [2021-10-21 20:15:38,490 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-10-21 20:15:38,490 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-21 20:15:38,490 INFO L857 garLoopResultBuilder]: For program point L6-1(lines 6 8) no Hoare annotation was computed. [2021-10-21 20:15:38,491 INFO L853 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: (let ((.cse0 (= (+ (* 6 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 5 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 12 ULTIMATE.start_main_~x~0)))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (<= ULTIMATE.start_main_~c~0 2) .cse0 (<= ULTIMATE.start_main_~k~0 2) (< 1 ULTIMATE.start_main_~k~0) .cse1 (= ULTIMATE.start_main_~y~0 2)) (and (<= ULTIMATE.start_main_~c~0 4) .cse0 (< 3 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 4) .cse1 (= ULTIMATE.start_main_~y~0 4)) (and (= ULTIMATE.start_main_~y~0 0) (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (and .cse0 (= ULTIMATE.start_main_~y~0 3) (<= ULTIMATE.start_main_~c~0 3) .cse1 (< 2 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 3)) (and (< 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 1) (= ULTIMATE.start_main_~y~0 1) (<= ULTIMATE.start_main_~c~0 1)) (and .cse0 (< 4 ULTIMATE.start_main_~k~0) (= ULTIMATE.start_main_~y~0 5) (<= ULTIMATE.start_main_~c~0 5) .cse1 (<= ULTIMATE.start_main_~k~0 5)))) [2021-10-21 20:15:38,491 INFO L857 garLoopResultBuilder]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2021-10-21 20:15:38,491 INFO L860 garLoopResultBuilder]: At program point L10-8(lines 9 15) the Hoare annotation is: true [2021-10-21 20:15:38,495 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:15:38,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:15:38 BoogieIcfgContainer [2021-10-21 20:15:38,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:15:38,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:15:38,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:15:38,551 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:15:38,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:26" (3/4) ... [2021-10-21 20:15:38,553 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:15:38,561 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-21 20:15:38,561 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:15:38,561 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:15:38,561 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:15:38,596 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:15:38,597 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:15:38,598 INFO L168 Benchmark]: Toolchain (without parser) took 12665.04 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 60.5 MB in the beginning and 85.7 MB in the end (delta: -25.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:38,599 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory was 76.8 MB in the beginning and 76.8 MB in the end (delta: 64.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:15:38,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.74 ms. Allocated memory is still 96.5 MB. Free memory was 60.3 MB in the beginning and 72.6 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:38,599 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.40 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:38,600 INFO L168 Benchmark]: Boogie Preprocessor took 22.02 ms. Allocated memory is still 96.5 MB. Free memory was 71.1 MB in the beginning and 70.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:38,600 INFO L168 Benchmark]: RCFGBuilder took 553.69 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 60.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:38,601 INFO L168 Benchmark]: TraceAbstraction took 11731.56 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 59.5 MB in the beginning and 88.8 MB in the end (delta: -29.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:38,601 INFO L168 Benchmark]: Witness Printer took 46.36 ms. Allocated memory is still 130.0 MB. Free memory was 88.8 MB in the beginning and 85.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:38,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory was 76.8 MB in the beginning and 76.8 MB in the end (delta: 64.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.74 ms. Allocated memory is still 96.5 MB. Free memory was 60.3 MB in the beginning and 72.6 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.40 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.02 ms. Allocated memory is still 96.5 MB. Free memory was 71.1 MB in the beginning and 70.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 553.69 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 60.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11731.56 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 59.5 MB in the beginning and 88.8 MB in the end (delta: -29.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. * Witness Printer took 46.36 ms. Allocated memory is still 130.0 MB. Free memory was 88.8 MB in the beginning and 85.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 11591.0ms, OverallIterations: 11, TraceHistogramMax: 7, EmptinessCheckTime: 18.0ms, AutomataDifference: 1420.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 608.7ms, InitialAbstractionConstructionTime: 10.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 159 SDtfs, 76 SDslu, 449 SDs, 0 SdLazy, 613 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 738.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 765.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=10, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 102.7ms AutomataMinimizationTime, 11 MinimizatonAttempts, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 25 NumberOfFragments, 801 HoareAnnotationTreeSize, 5 FomulaSimplifications, 632 FormulaSimplificationTreeSizeReduction, 104.7ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 165 FormulaSimplificationTreeSizeReductionInter, 497.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 70.4ms SsaConstructionTime, 3558.6ms SatisfiabilityAnalysisTime, 2520.1ms InterpolantComputationTime, 210 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 1220 SizeOfPredicates, 36 NumberOfNonLiveVariables, 893 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 77/192 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && 0 < k) && 1 == cond) && y == 1) && k <= 5) && c == 1) && x == y * y * y * y * y) || ((((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && cond == 1) && y == 3) && 1 == cond) && k <= 5) && c == 3) && 2 < k)) || (((((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && cond == 1) && 4 < k) && 5 <= c) && y == 5) && c <= 5) && 1 == cond) && k <= 5)) || ((((((c == 2 && 6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x) && cond == 1) && 1 < k) && 1 == cond) && k <= 5) && y == 2)) || ((((((y == 0 && 0 <= k) && 6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x) && cond == 1) && 1 == cond) && k <= 5) && c == 0)) || ((((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && cond == 1) && 3 < k) && 1 == cond) && k <= 5) && y == 4) && c == 4) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && 0 < k) && 1 == cond) && y == 1) && k <= 5) && c == 1) && x == y * y * y * y * y) || ((((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && cond == 1) && y == 3) && 1 == cond) && k <= 5) && c == 3) && 2 < k)) || (((((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && cond == 1) && 4 < k) && 5 <= c) && y == 5) && c <= 5) && 1 == cond) && k <= 5)) || ((((((c == 2 && 6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x) && cond == 1) && 1 < k) && 1 == cond) && k <= 5) && y == 2)) || ((((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && cond == 1) && 3 < k) && 1 == cond) && k <= 5) && y == 4) && c == 4)) || (((((y == 0 && 0 <= k) && 6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x) && cond == 1) && k <= 5) && c == 0) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (((((((((c <= 2 && 6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x) && k <= 2) && 1 < k) && 1 == cond) && y == 2) || (((((c <= 4 && 6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x) && 3 < k) && k <= 4) && 1 == cond) && y == 4)) || ((y == 0 && x == 0) && 1 <= cond)) || (((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && y == 3) && c <= 3) && 1 == cond) && 2 < k) && k <= 3)) || (((0 < k && k <= 1) && y == 1) && c <= 1)) || (((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && 4 < k) && y == 5) && c <= 5) && 1 == cond) && k <= 5) RESULT: Ultimate proved your program to be correct! [2021-10-21 20:15:38,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d7d92c-4543-4e27-98f4-d5468ea757ce/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...